Question
Download Solution PDFIn regard to estimation and costing of public lighting, which of the following factors is NOT a fundamental criterion for the quality of public lighting?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFIn the context of estimating and costing public lighting, the factor that is NOT a fundamental criterion for the quality of public lighting is the Looping-in method.
The other factors are relevant to the quality of public lighting:
- Level of luminance: This refers to the amount of light emitted and is crucial for ensuring adequate visibility and safety.
- Optical guidance: This involves the design of lighting to guide or direct light effectively, enhancing visibility and reducing light pollution.
- Limitations of glare: Controlling glare is important for reducing visual discomfort and improving safety for pedestrians and drivers.
Different classes of illumination level
| Classes | Average Illumination Level | Application |
| Class A1 | 30-50 lux or higher | shopping centers, road junctions, and areas with high pedestrian traffic |
| Class A2 | 15-30 lux | Residential areas, minor shopping centers, less busy road junctions |
| Class B1 | 10-20 lux | Major roads, parking lots, industrial areas |
| Class B2 | 5-10 lux | Residential streets, sidewalks, parks |
| Class C1 | 20-50 lux | Perimeters of buildings, security checkpoints, entrance areas |
| Class C2 | 200-500 lux or higher, depending on the task | Workspaces, assembly lines, inspection areas |
| Class D1 | Variable, often lower than 10 lux | Building facades, monuments, landscaping |
| Class D2 | Typically 1-5 lux | Emergency exits, stairwells, corridors |
| Class E1 | 300-500 lux | Offices, classrooms, retail stores |
| Class E2 | 500-1000 lux or higher | Operating theaters, laboratories, critical inspection areas |
| Class F | 1-5 lux | Movie theaters, intimate dining areas, decorative lighting |
| Class G | 300-1500 lux, depending on the sport | Stadiums, sports fields, recreational areas |
Last updated on Jul 1, 2025
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